CN102797586B - Left crankcase body of horizontal balance-shaft engine - Google Patents
Left crankcase body of horizontal balance-shaft engine Download PDFInfo
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- CN102797586B CN102797586B CN201210309034.XA CN201210309034A CN102797586B CN 102797586 B CN102797586 B CN 102797586B CN 201210309034 A CN201210309034 A CN 201210309034A CN 102797586 B CN102797586 B CN 102797586B
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Abstract
The invention discloses a left crankcase body of a horizontal balance-shaft engine, which is characterized in that: a balance-shaft mounting hole (10) is formed in a quadrangle defined by a crank center hole (1), a spindle center hole (2), a second case-body hanging hole (6) and a starting motor center hole (4), a first starting-motor screw fixing hole (7) is formed in the left side of the starting motor center hole (4), a second starting-motor screw fixing hole (8) is formed in the lower right corner of the starting motor center hole (4), and a third starting-motor screw fixing hole (9) is formed in the upper right corner of the starting motor center hole (4). According to the invention, on the premise of not changing the overall structure of the existing common horizontal engine crankcase, a quadrilateral space defined by the crank center hole, the spindle center hole, the second case-body hanging hole and the starting motor center hole is skillfully used, and the position of the first starting-motor screw fixing hole moves upwards, thereby making an enough space for arranging the balance-shaft mounting hole.
Description
Technical field
The present invention relates to technical field of engines, specifically, is a kind of left crankcase of horizontal type balancing shaft generator.
Background technique
Be illustrated in figure 1 the left crankcase of horizontal common engine, in left crankcase, offer crank center hole 1, spindle hole 2, countershaft center hole 3 and actuating motor center hole 4, be provided with first, second casing suppending hole 5,6 in the periphery of casing, crank center hole 1, spindle hole 2, countershaft center hole 3 are positioned on same level line and set gradually from right to left, actuating motor center hole 4 is positioned at the upper right in crank center hole 1, the first casing suppending hole 5 is positioned at the left side of casing, and the second casing suppending hole 6 is near the upper middle position of casing.The periphery of actuating motor center hole 4 is provided with first, second, third actuating motor screw fixed hole 7,8,9 of distribution triangular in shape, the first starting motor screw fixed hole 7 is positioned at the lower left corner of actuating motor center hole 4, the lower right corner that the second actuating motor screw fixed hole 8 is positioned at actuating motor center hole 4, and the 3rd actuating motor screw fixed hole 9 is positioned at the upper right corner of actuating motor center hole 4.
In order to reduce the vibration of motor, improve travelling comfort and the power character driven, trunnion shaft can be set conventionally in crankcase.At present, motorcycle horizontal type balancing shaft generator cost is higher both at home and abroad, kind is less, untapped trunnion shaft also on common horizontal motor, in order to improve travelling comfort and the power character of motorcycle, under the prerequisite of suppending hole coordinate dimension that does not change existing common horizontal motor, design that a cost is lower, the horizontal type balancing shaft generator of highly versatile, both cost that can control engine, has improved again travelling comfort, the power character of motorcycle engine.
Summary of the invention
The object of the invention is do not changing under the integrally-built prerequisite of existing common horizontal engine crankcase load balance axle mounting hole, travelling comfort and the power character of raising motorcycle, thereby the cost of control engine.
For this reason, the technical solution adopted in the present invention is: the left crankcase of horizontal type balancing shaft generator, in casing, offer crank center hole, spindle hole, countershaft center hole and actuating motor center hole, periphery at casing is provided with first, the second casing suppending hole, described crank center hole, spindle hole, the hole heart of countershaft center hole is positioned on same level line and sets gradually from right to left, described actuating motor center hole is positioned at the upper right in crank center hole, the first casing suppending hole is positioned at the left side of casing, the second casing suppending hole is near the upper middle position of casing, the periphery of described actuating motor center hole is provided with first of distribution triangular in shape, second, the 3rd actuating motor screw fixed hole, key is: in described crank center hole, spindle hole, in the quadrilateral that the second casing suppending hole and actuating motor center hole surround, be provided with trunnion shaft mounting hole, described the first starting motor screw fixed hole position is in the left side of actuating motor center hole, the second actuating motor screw fixed hole is positioned at the lower right corner of actuating motor center hole, the 3rd actuating motor screw fixed hole is positioned at the upper right corner of actuating motor center hole.
At present, both at home and abroad also untapped go out horizontal type balancing shaft generator crankcase body, be designed to horizontal type balancing shaft generator crankcase body and improve for horizontal common engine crankcase body, the problem that is difficult to most to solve is exactly how under the integrally-built prerequisite that does not change horizontal common engine crankcase body, load balance axle mounting hole, also can be applied on existing motorcycle the horizontal type balancing shaft generator crankcase body after improving.But, due to the compact structure of existing horizontal common engine crankcase body, find enough spaces and arrange that trunnion shaft mounting hole also becomes particularly difficulty.The interior space of quadrilateral that the present invention utilizes crank center hole, spindle hole, the second casing suppending hole and actuating motor center hole to surround dexterously, and the position of the first starting motor screw fixed hole is upwards moved, thereby enough spaces are vacateed for arranging trunnion shaft mounting hole.
Take the plane perpendicular to central hole of the crankshaft as reference level, with crank center hole on reference level, be projected as true origin, the projection coordinate of spindle hole in the plane coordinate system forming with respect to this initial point is (0,-74.5), the projection coordinate of countershaft center hole in the plane coordinate system forming with respect to this initial point is (0,-116.5), the projection coordinate of actuating motor center hole in the plane coordinate system forming with respect to this initial point is (35.8, 102), the first projection coordinate of casing suppending hole in the plane coordinate system forming with respect to this initial point is (170.5,-26), the second projection coordinate of casing suppending hole in the plane coordinate system forming with respect to this initial point is (60, 81), the first projection coordinate of starting motor screw fixed hole in the plane coordinate system forming with respect to this initial point is (6, 102.2), the second projection coordinate of actuating motor screw fixed hole in the plane coordinate system forming with respect to this initial point is (71, 78.13), the 3rd projection coordinate of actuating motor screw fixed hole in the plane coordinate system forming with respect to this initial point is (46.1, 144.1), the projection coordinate of trunnion shaft mounting hole in the plane coordinate system forming with respect to this initial point is (16.7 ± 0.03, 54.5 ± 0.03).Make the coordinate dimension on horizontal type balancing shaft generator left crankcase consistent with coordinate dimension on the horizontal common engine left crankcase of commonly using, the versatility of product is further provided, reduced mould development cost.
Beneficial effect of the present invention: because of the overall structure of this left crankcase and the left crankcase overall structure of common horizontal motor consistent, the feature such as have that cost is low, versatility, load balance axle are convenient, improves travelling comfort and the power character of the motorcycle of having rubbed.
Accompanying drawing explanation
Fig. 1 is the left crankcase of horizontal common engine.
Fig. 2 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
The crankcase body of the horizontal type balancing shaft generator shown in Fig. 2, the axis that offers crank center hole 1, spindle hole 2, countershaft center hole 3, actuating motor center hole 4, four in casing is parallel to each other.Be provided with first, second casing suppending hole 5,6 in the periphery of casing.Crank center hole 1 is for installing bent axle, spindle hole 2 for main shaft, countershaft center hole 3 being installed for countershaft, actuating motor center hole 4 being installed for actuating motor axle is installed, and first, second casing suppending hole 5,6 is installed for casing.
The hole heart of crank center hole 1, spindle hole 2, countershaft center hole 3 is positioned on same level line and sets gradually from right to left.Actuating motor center hole 4 is positioned at the upper right in crank center hole 1, and the first casing suppending hole 5 is positioned at the left side of casing, and the second casing suppending hole 6 is near the upper middle position of casing.The periphery of actuating motor center hole 4 is provided with first, second, third actuating motor screw fixed hole 7,8,9 of distribution triangular in shape for actuating motor is installed.The above is consistent with the crankcase body structure of existing horizontal common engine.
Difference is: in the quadrilateral surrounding at crank center hole 1, spindle hole 2, the second casing suppending hole 6 and actuating motor center hole 4, be provided with trunnion shaft mounting hole 10, the first starting motor screw fixed hole 7 is positioned at the left side of actuating motor center hole 4, the lower right corner that the second actuating motor screw fixed hole 8 is positioned at actuating motor center hole 4, and the 3rd actuating motor screw fixed hole 9 is positioned at the upper right corner of actuating motor center hole 4.
Be preferably, take the plane perpendicular to central hole of the crankshaft 1 as reference level, with crank center hole 1 on reference level, be projected as true origin (0, 0), the projection coordinate of spindle hole 2 in the plane coordinate system forming with respect to this initial point is (0,-74.5), the projection coordinate of countershaft center hole 3 in the plane coordinate system forming with respect to this initial point is (0,-116.5), the projection coordinate of actuating motor center hole 4 in the plane coordinate system forming with respect to this initial point is (35.8, 102), the first projection coordinate of casing suppending hole 5 in the plane coordinate system forming with respect to this initial point is (170.5,-26), the second projection coordinate of casing suppending hole 6 in the plane coordinate system forming with respect to this initial point is (60, 81), the first projection coordinate of starting motor screw fixed hole 7 in the plane coordinate system forming with respect to this initial point is (6, 102.2), the second projection coordinate of actuating motor screw fixed hole 8 in the plane coordinate system forming with respect to this initial point is (71, 78.13), the 3rd projection coordinate of actuating motor screw fixed hole 9 in the plane coordinate system forming with respect to this initial point is (46.1, 144.1), the projection coordinate of trunnion shaft mounting hole 10 in the plane coordinate system forming with respect to this initial point is (16.7 ± 0.03, 54.5 ± 0.03).
Claims (2)
1. the left crankcase of a horizontal type balancing shaft generator, in casing, offer crank center hole (1), spindle hole (2), countershaft center hole (3) and actuating motor center hole (4), periphery at casing is provided with first, the second casing suppending hole (5, 6), described crank center hole (1), spindle hole (2), the hole heart of countershaft center hole (3) is positioned on same level line and sets gradually from right to left, described actuating motor center hole (4) is positioned at the upper right of crank center hole (1), the first casing suppending hole (5) is positioned at the left side of crankcase body, the second casing suppending hole (6) is near the neutral position on casing top, the periphery of described actuating motor center hole (4) is provided with first of distribution triangular in shape, second, the 3rd actuating motor screw fixed hole (7, 8, 9), it is characterized in that: in described crank center hole (1), spindle hole (2), in the quadrilateral that the second casing suppending hole (6) and actuating motor center hole (4) surround, be provided with trunnion shaft mounting hole (10), described the first starting motor screw fixed hole (7) is positioned at the left side of actuating motor center hole (4), the second actuating motor screw fixed hole (8) is positioned at the lower right corner of actuating motor center hole (4), the 3rd actuating motor screw fixed hole (9) is positioned at the upper right corner of actuating motor center hole (4).
2. according to the left crankcase of horizontal type balancing shaft generator claimed in claim 1, it is characterized in that: take the plane perpendicular to central hole of the crankshaft (1) as reference level, with crank center hole (1) on reference level, be projected as true origin (0, 0), the projection coordinate of spindle hole (2) in the plane coordinate system forming with respect to this initial point is (0,-74.5), the projection coordinate of countershaft center hole (3) in the plane coordinate system forming with respect to this initial point is (0,-116.5), the projection coordinate of actuating motor center hole (4) in the plane coordinate system forming with respect to this initial point is (35.8, 102), the first projection coordinate of casing suppending hole (5) in the plane coordinate system forming with respect to this initial point is (170.5,-26), the second projection coordinate of casing suppending hole (6) in the plane coordinate system forming with respect to this initial point is (60, 81), the first projection coordinate of starting motor screw fixed hole (7) in the plane coordinate system forming with respect to this initial point is (6, 102.2), the second projection coordinate of actuating motor screw fixed hole (8) in the plane coordinate system forming with respect to this initial point is (71, 78.13), the 3rd projection coordinate of actuating motor screw fixed hole (9) in the plane coordinate system forming with respect to this initial point is (46.1, 144.1), the projection coordinate of trunnion shaft mounting hole (10) in the plane coordinate system forming with respect to this initial point is (16.7 ± 0.03, 54.5 ± 0.03).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309034.XA CN102797586B (en) | 2012-08-28 | 2012-08-28 | Left crankcase body of horizontal balance-shaft engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309034.XA CN102797586B (en) | 2012-08-28 | 2012-08-28 | Left crankcase body of horizontal balance-shaft engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797586A CN102797586A (en) | 2012-11-28 |
| CN102797586B true CN102797586B (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210309034.XA Active CN102797586B (en) | 2012-08-28 | 2012-08-28 | Left crankcase body of horizontal balance-shaft engine |
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| CN (1) | CN102797586B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306844B (en) * | 2013-06-28 | 2015-09-02 | 力帆实业(集团)股份有限公司 | Outer body engine left crank case |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6069251A (en) * | 1983-09-26 | 1985-04-19 | Yamaha Motor Co Ltd | Crankcase for multi-cylinder engine |
| JP2002037168A (en) * | 2000-07-19 | 2002-02-06 | Honda Motor Co Ltd | Crankcase structure of engine for motorcycle and motor- tricycle |
| JP2003049708A (en) * | 2001-08-03 | 2003-02-21 | Yanmar Co Ltd | Small engine |
| JP2008308990A (en) * | 2007-06-12 | 2008-12-25 | Yamaha Motor Co Ltd | Engine, lid mounted thereon and vehicle equipped with the engine |
| TWI447298B (en) * | 2010-09-09 | 2014-08-01 | Sanyang Industry Co Ltd | Vehicle engine |
| CN202768162U (en) * | 2012-08-28 | 2013-03-06 | 力帆实业(集团)股份有限公司 | Left crankshaft box body structure of horizontal balance shaft engine |
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- 2012-08-28 CN CN201210309034.XA patent/CN102797586B/en active Active
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| CN102797586A (en) | 2012-11-28 |
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Address after: 400037 Chongqing city Beibei District caijiagang Zhen Tong Xing Industrial Park Fengqi Road No. 16 Patentee after: Lifan Industry (Group) Co., Ltd. Address before: 400037 Chongqing city Shapingba District No. 60 Zhangjiawan Bridge Patentee before: Lifan Industry (Group) Co., Ltd. |